GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Cavalier 🢒 Engine 🢒 Engine Controls - 2.2L 🢒 Cruise Control Diagnosis

Object Number: 50803 Size: LF
Engine Controls Components
VSS and Cruise Control
OBD II Symbol Description Notice
Powertrain Control Module Connector End Views
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice

Diagnosis

The following table will diagnose the cruise disable and cruise engaged circuits. Refer to Wiring Repairs in Wiring Systems when diagnosing the remaining cruise control system circuits.

Circuit Description

The stepper motor cruise module communicates with the powertrain control module (PCM) over three circuits (cruise engaged, cruise disabled and VSS output). The cruise enable status tells the PCM if the cruise control system is enabled. The vehicle speed sensor (VSS) output is the speed signal from the vehicle speed sensor through the PCM and used by the cruise control module. The cruise disable line allows the PCM to disable cruise under the various conditions described below:

    • DTCs P0122, P0123, P0200, P0335, P0502, P0562, P0563 are not set.
    • Engine is not running.
    • Transmission is in Park, Neutral, or Reverse (automatic transmission).
    • Transmission is out of gear (manual transmission).
    • Safety fuel cut-off is active.
        If the PCM detects any one of the above conditions, it will interrupt the ground at the cruise disable input circuit and disable the cruise control.

Diagnostic Aids
    • This table will not diagnose any cruise control system circuits other than those connected to the PCM. For diagnosis of the remaining circuits, refer to Wiring Repairs in Wiring Systems.
    • An Intermittent problem may be caused by:
      • A poor connection
      • Rubbed through wire insulation
      • A wire that is broken inside the insulation
    • The cruise control system may disable if actual speed is less than 24 km/h (15 mph) than commanded vehicle speed, i.e. towing a trailer, or climbing a steep grade.
    • Minimum vehicle speed for setting the cruise control system is 40 km/h (25 mph).

Test Description

Numbers below refer to the step numbers on the Diagnostic Table.

  1. The Powertrain OBD System Check prompts the technician to complete some basic checks and store the freeze frame and failure records data on the scan tool if applicable. This creates an electronic copy of the data taken when the malfunction occurred. The information is then stored on the scan tool for later reference.

    2.

  2. The cruise speed set has to be above the minimum speed (25 mph/40 km/h) required for cruise operation. Drive vehicle in an area where enough room is allowed for cruising.

    3.

  3. If the vehicle was in the enabling criteria for cruise operation, the PCM should have read stepper cruise Engaged even if cruise was not requested. The Cruise Engaged circuit provides a ground to the cruise control module. This step checks for an open or shorted cruise engage circuit.

    4.

  4. At this point, the PCM is allowing cruise operation and the cruise module is telling the PCM that the cruise is engaged. If the vehicle will not maintain the set speed, then the malfunction is in the cruise control module or is a throttle linkage problem.

    5.

  5. The replacement PCM must be programmed and the crankshaft position system variation procedure must be preformed. Refer to PCM Replacement/Programming for PCM reprogramming and CKP System Variation Learn Procedure for the crankshaft position system variation procedure.

Cruise Control Diagnosis

Step

Action

Value(s)

Yes

No

1

Did you perform the Powertrain On-Board Diagnostic (OBD) System Check?

--

Go to Step 2

Go to Powertrain On Board Diagnostic (OBD) System Check for 2.4L or Powertrain On Board Diagnostic (OBD) System Check for 2.2L

2

  1. Turn ON ignition switch leaving engine OFF.
  2. Install a scan tool.
  3. Check for any DTCs set with scan tool.

Are any codes present?

--

Go to DTCs

Go to Step 3

3

  1. Start the engine.
  2. Drive the vehicle.
  3. Set the Cruise Control to a vehicle speed above the specified value.

Does the cruise control operate normally?

40 Km/h (25 MPH)

Go to Step 4

Go to Step 9

4

Observe the Cruise (Engage/Disengaged) parameter on the scan tool.

Does the Cruise parameter display engaged?

--

Go to Step 12

Go to Step 6

5
  1. Observe the Cruise (Engage/Disengaged) parameter on the scan tool.
  2. Apply the brake then release.
  3. Press resume.
  4. Turn Off the cruise control

Does the Cruise (Engage/Disengaged) parameter display a change with each action?

--

Go to Step 12

Go to Step 5

6

  1. Return to the shop.
  2. Turn OFF the ignition switch.
  3. Disconnect the Cruise Control module electrical connector.
  4. Turn ON the ignition switch leaving the engine OFF.
  5. Connect a DMM to ground.
  6. Probe the Cruise Control Engage Circuit.

Does the DMM display a voltage near the specified value?

B+

Go to Step 8

Go to Step 7

7

  1. Check the Cruise Control Engage circuit for an open circuit.
  2. Repair the circuit as necessary. Refer to Wiring Repairs in Wiring Systems.

Was a repair necessary?

--

Go to Step 14

Go to Step 12

8
  1. Turn Off the ignition switch.
  2. Check the Cruise Control Engage circuit for a short to voltage.
  3. Repair the circuit as necessary. Refer to Wiring Repairs in Wiring Systems.

Was a repair necessary

--

Go to Step 12

Go to Cruise Control System Check in Cruise Control

9
  1. Return to the shop.
  2. Turn OFF the ignition switch.
  3. Disconnect the Cruise Control module electrical connector.
  4. Turn ON the ignition switch leaving the engine OFF.
  5. Connect a DMM to ground.
  6. Probe the Cruise Disable circuit with the DMM.
  7. Command ON the Cruise Enable with the scan tool.

Does the DMM display a voltage near the specified value?

B+

Go to Step 10

Go to Step 11

10
  1. Check the Cruise Control Disable circuit for a short to voltage.
  2. Repair the circuit as necessary. Refer to Wiring Repairs in Wiring Systems.

Was a repair necessary?

--

Go to Step 12

Go to Step 11

11

  1. Turn OFF ignition switch.
  2. Check Cruise Disable circuit for an open circuit.
  3. Repair the circuit as necessary. Refer to Wiring Repairs in Wiring Systems.

Was a repair necessary?

--

Go to Step 14

Go to Step 12

12

  1. Check for a poor electrical terminal connections at the PCM.
  2. Repair circuit as necessary. Refer to Wiring Repairs in Wiring Systems.

Was a repair necessary?

--

Go to Step 14

Go to Step 13

13

  1. Turn OFF ignition switch.
  2. Replace PCM. Refer to PCM Replacement .

Is the action complete

--

Go to Step 14

--

14

Operate the vehicle within the conditions under which the original symptom was observed. Does the system now operate properly?

--

System OK, Refer to Diagnostic Aids

Go to Step 2